71915 ACEGA/HCP4A
Hybrid Ceramic Super Precision Bearings
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71915 ACEGA/HCP4A Bearing Product Overview & Core Advantages
The 71915 ACEGA/HCP4A is a high-precision angular contact ball bearing designed for demanding applications requiring exceptional accuracy and performance. Engineered with a 25° contact angle and an Extra Light (Class A) preload, this bearing delivers superior rotational accuracy and rigidity. Its open seal type allows for optimal lubrication management, while the combination of ceramic balls and a phenolic cage enables outstanding high-speed performance with a limiting speed of 22,000 rpm. As a Universal Matchable (SU) bearing, it can be precisely paired with another identical bearing to form a pre-loaded duplex set, ideal for supporting combined loads in sophisticated machinery.
71915 ACEGA/HCP4A Bearing Model Code Explained, Specifications & Naming Convention
| Code Segment | Technical Meaning |
|---|---|
| 71915 | Basic bearing designation, indicating a metric, single row angular contact ball bearing with a 75mm bore and 105mm outside diameter. |
| AC | Angular Contact design with a 25° contact angle. |
| E | Optimized internal design for high performance, including ceramic balls and increased ball quantity (23). |
| GA | Indicates a Universal Matchable (SU) bearing supplied with an Extra Light (Class A) preload. |
| HCP4A | The P4A suffix denotes an extremely high tolerance class for superior running accuracy. The "HC" prefix may refer to a specific manufacturer's designation for a high-capacity or hybrid ceramic series. |
71915 ACEGA/HCP4A Bearing Structural Features & Performance Benefits
- Hybrid Ceramic Design: The use of ceramic balls significantly reduces friction, heat generation, and wear, contributing to a higher limiting speed and longer service life, especially in high-speed applications.
- High Rigidity & Precision: The P4A tolerance class ensures minimal runout and vibration, while the 25° contact angle and preload provide excellent axial and radial stiffness for precise shaft positioning.
- Optimized Cage & Lubrication: The phenolic cage is lightweight and robust, ideal for high-speed operation. The bearing is supplied lubricated, ready for initial operation within its specified temperature range.
- Superior Load Capacity: With a dynamic load rating of 4770 lbf and a static load rating of 3600 lbf, this bearing is capable of handling significant combined loads.
71915 ACEGA/HCP4A Bearing Typical Application Areas
The 71915 ACEGA/HCP4A is engineered for high-performance applications where speed, precision, and reliability are paramount. Key industries and equipment include:
- Machine Tool Spindles: High-speed machining centers, grinding spindles.
- Precision Robotics: Arm joints and high-accuracy rotary axes.
- Aerospace & Defense: Gyroscopes, radar systems, and auxiliary power units.
- High-Speed Motors & Drives: Electric spindles, servo motors.
- Medical Equipment: Dental handpieces, high-speed centrifuges.
